Subcategory designation and class numbers
| Buildings and Built Heritage | |
| Subcategories | Designation |
| 1 | Concrete structures and elements |
| 2 | Metal structures |
| 3 | Wood structures |
| 4 | Masonry, plasters/renders, and ashlar masonry settlement |
| 5 | Gypsum plaster, painting, and other wall coatings |
| 6 | Carpentry |
| 7 | Non-structural profile work |
| 8 | Plumbing and ducts in buildings |
| 9 | Miscellaneous installations |
| 10 | Restoration of historical and artistic property |